Printing device



Oct- 10, 1933; Efu. T. BERTHl-:LSEN 1,929Q472 PRINTING DEVICE Filed oct. 17, 1931 Patented Get. 10, 1933 A 1,929,472 PRINTING DEVICE Erhard U. T. Berthelsen, Chicago, Ill., assigner to AddressographV Company, a corporation of Delaware Cleveland, Ohio,

Application October 17, w31,V Serial No. 569,465 7 Claims. (Cl. lOl-369) This invention relates to printing devices or the kind comprising a 'traine on which an embossed printing plate is detachably held byre taining means integral with the frame. one ein ample being disclosed in the patent to Valenine J. Mohler, No. 1,812,894, patented July 7, V1931.

These printing devices are storedl in drawers of cabinets in accordance with` a classiiication system, and are deposited in a magazine of an addressing machine and are sequentially passed through printing position to printraddresses and i he like, after which they are returned to storage. The retaining means by which the plate is detachably held on the frame comprise resilient tongues having .stops thereon which engage the ends of the pate and prevent endwise displacement thereof. By depressing one or the other oi' the tongues he plate may be slid vendwise in the retaining devices and over the depressed tongue and removed from the frame; and a new plate may beinserted by sliding it endwise over1 the depressed tongue into engagement withthe retaining devices. In the Mohler patent referred i o, the end portions or" the tongues are stepped to form stops with which ends oi the plate are adapted to engage. These stops or steps are formed by bending the tongue and to avoid breaking the metal the cuter edge of the stop or step is ben' on a radius which will vary somewhat in die work and become greater as the dies wear. Since these stops are formed on the end portions o the spring tongues, it has been found that sometimes a plate may coast over a stop Vand become displaced on the frame and even become dislodged therefrom. This may be due to accidental'pressure, or io failure of the tongue to return to normal position, or to enlarged radius of the outer bend of the tongue, or to other causes, and it is the primary object of the invention to overcome the liability of the plate being accidentallydisengaged from its predetermined position on the frame as defined by the stops on the tongues and the other retaining devices.

And further objects of the invention are to provide the stop with means to prevent the plate from accidentally coasting over the tongue and becoming dislodged from its position on the plate; to provide the stop with a shoulder to compensate for the radius of the bend forming the stop; and to make this shoulder integral with the stop and in the same operation by which the stop is Iormed. Y

In the accompanying drawing illustrating selected embodimensof the invention 1 is an elevation of a printing device including one form of my invention.

Fig. 2 is a detail enlarged perspective View showing one of the tongues of Fig. 1.

Fig. 3 is anlenlarged detail sectional View on 50 the line 3 3 of Fig. 1. l

Fig; e is a perspective view of a tongue showing another form of the invention. Y n

Fig.r 5 is a detail sectional View similar to Fig.

3 but showing .the form of the invention 0F55 Fig. 4. .Y

Fig.V 6 isa perspective view of the tongue showing another form of the invention.

Fig. 7V is a sectional View similar to Fig. 3 show.- ing the form of invention of Fig. 6, andV '30 Fig. 8 is a sectional view showing a modified ferm ci the invention of Figs. 4 and 5.. Referring to the drawing 9 is the frame, 10

ls the printing plate,` andY 11 is an information card which generally bears an impression vof the printing plate and is detachably held -on the frame. The frame is made of sheet metal and it is .provided at its ends and on its back with spacing flanges 12, and on its iront with plate retaining devices including the bottom bead 13 8G for engaging the bottom edge of the plate, the

lips 14 for engaging the top edge of the plate, and the yielding locking tongues 15 which have stepped end portions 16 forming. stops 17 for engaging the ends of the plate, all of these parts being conveniently stamped from the body of the frame. The end portion 16 vforms a finger piece on the vtongue by which the tongue may be depressed to clear the stop from the end of the plate and the depression oi the tongueA is limited by engagement of the finger piece with the spacing ange 12. The outer bend 18 of each tongue is formed on a radius and intermediate of the side edges of the tongue at this bend I provide a shoulder 19, Figs. 2 and 3, which is made as 95 nearly as possible in the form of a right angle with its top` in the plane of the extreme end portion or linger piece of the tongue and its side in the plane of the riser of the step which forms the stop 1,7. This shoulder thus forms a continuation of the stop in the plane of the body thereof as nearly as it could be made in a stamping operation yif the outer bend was formed sharply instead of on a radius. It is not practicable in a stamping 1 05 operation to make this outer bend a right angle throughout its length because of the liability of breaking the metal, but it is practicable to make a part of the bend a right angle to form the shoumer 19, and this shoulder makes the stop U0 effective from bottom to top for engaging the end of the plate and preventing it from coasting over the rounded parts of the bend at each end of the shoulder.

The shoulder may be formed as shown in Figs. 1 to 3 without breaking the metal but it will not be `objectionable if the metal is broken as indicated at 20, Figs. 4 and 5. I he dies may be made to intentionally break the metal and form a shoulder 21, Fig. 8, which will project inwardly of the frame slightly beyond the riser forming the stop to slightly overlap the end of the plate. A clearance is provided between the ends of the plate and the stops and, therefore, this lip 2l may be employed without interfering with the insertion of the plate on the Vframe or the removal of the plate therefrom. In Figs. 6 and 7, I have shown another embodiment of the invention in which the end portion or iinger piece 22 of the tongue is reduced in Width outwardly of the bend 23. Upstanding `shoulders 24 at the ends of the bend constitute extensions ofthe stop 25 and the upper ends thereof terminate in the plane of the top of the finger piece. The riser of the step on the tongue forms the stop which is engaged by the end of the plate and heretofore theeffective height of this stop above the body of the tongue has been reduced by the radius of the bend at the top of the stop and, as before stated, it is possible under certain conditions for the plate to coast over this rounded bend and become dislodged from the frame; but in all forms of the present invention the stop is made effective by the shoulder for the full height of the riser and effectually prevents liability of the plate coasting over the stop and requires that the tongue be depressed until the plate clears the shoulder be *Y fore the plate can be slidover the tongue for removal. The invention greatlyY increases the efficiency of the tongues as locking retainers for holding the plate on the frame and in al1 forms of the invention the shoulder can be made with- 4 out adding to or changing the'die operation. In

forming the shoulder 19 the metal may not break in some die operations as shown in Figs. 2 and 3 and it may break in others as shown in Figs. 4 and 5, butthis is not matenial since there will always be sufficient strength in the unbroken part of the tongue to support the finger piece 22.

I have shown the invention in a frame having two locking tongues and in several different forms which are suitable for accomplishing the ypurposes of the invention but it may be embodied in a frame having but one locking tongue and in other forms, and I reserve .the right to make any changes Within the scope of the in- -vention as dened by the following claims.

I claim:

1. A printing device comprising a frame, means on said frame for detaehably retaining a printing plate thereon and including a yieldinglocking tongue having a plate-engaging stop and a finger piece thereon, and means on said tongue having the upper surfaces thereof disposed substantially in the plane of the top of the finger piece and cooperating with said stop to prevent accidental displacement of the plate from the frame.Y 2. A printing device comprising a frame, means on said frame for detachably retaining a printing plate thereon and including a yielding locking tongue having a plate-engaging stop and a finger piece thereon, and a shoulder on said tongue having the upper surface thereof aligned with the upper surface of the finger piece, said shoulder cooperating with said stop to prevent accidental displacement of the plate from the frame.

3. A printing device comprising a frame, means on said frame for detachably retaining a printing plate thereon and including a yielding locking tongue having a plate-engaging stop anda finger piece thereon, and a shoulder formed on said stop and aligned with the finger piece and increasing the effective area of the stop to prevent accidental displacement of the plate from the frame.

4. A printing device comprising a frame, means on said frame for detachably retaining a printing plateA thereon and including a yielding locking tongue stepped to form a stop and a finger portion, the bend in the tongue connecting the stop and finger portion being rounded, and a shoulder at said bend and of less length than the stop forming a continuation of the stop at the bend, said shoulder having the upper surface thereof disposed substantially in the plane of the top of the iinger piece.

5. A printing device comprising a frame, an integral locking tongue stamped from the frame and stepped to form a stop and a finger portion,l and a shoulder formed on thestop and projecting away from the finger portion toward the inner end of the tongue.

6. A printing device comprising a frame, an integral locking tongue stamped from the frame and stepped to form a stop and a finger portion, and a shoulder on the stop projecting away from the finger portion in substantially the plane of the finger portion.

7. A printing device comprising a frame, means on said frame for detachably retaining a printing plate thereon and including an integral locking tongue stamped from the frame and stepped to form a stop and a finger portion, and a shoulder on the stop projecting away from the finger portion to overlie the adjacent end of the plate.

ERHARD U. T. BERTHELSEN. 

